#include<stdio.h>
#include<string.h>
struct Student
{
	long num;
	char name[20];
	char sex;
	float score;
};
int main() {
	struct Student stu_1;
	struct Student *p;
	p=&stu_1;
	stu_1.num=10101;
	strcpy(stu_1.name,"Li Lin");
	stu_1.sex='M';
	stu_1.score=89.5;
	printf("NO.:%ld\nname:%s\nsex:%c\nscore:%5.lf\n",stu_1.num,stu_1.name,stu_1.sex,stu_1.score);
	printf("NO.:%ld\nname:%s\nsex:%c\nscore:%5.lf\n",(*p).num,(*p).name,(*p).sex,(*p).score);
	printf("NO.:%ld\nname:%s\nsex:%c\nscore:%5.lf\n",p->num,p->name,p->sex,p->score);
    return 0;
}
